21.

Lunar occultation of Sigma Sagittarii The Moon will pass in front of Sigma Sagittarii (Nunki), creating a lunar occultation visible from the Americas, Bonaire, Saint Eustatius and Saba, Clipperton Island, Grenada and Navassa Island. Wed, 18 Aug 2021 at 23:28 EDT (983 days ago) in Sagittarius

22.

Conjunction of Mercury and Mars Mercury and Mars share the same right ascension, at a separation of 4'48". Thu, 19 Aug 2021 at 00:09 EDT (982 days ago) in Leo

23.

Asteroid 43 Ariadne at opposition Asteroid 43 Ariadne makes closest approach to the Earth. Thu, 19 Aug 2021 at 07:58 EDT (982 days ago) in Aquarius

24.

Jupiter at opposition Jupiter lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Thu, 19 Aug 2021 at 20:20 EDT (982 days ago) in Capricornus

25.

Uranus enters retrograde motion Uranus reverses its direction of motion across the sky. Thu, 19 Aug 2021 at 20:57 EDT (982 days ago) in Aries

26.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Fri, 20 Aug 2021 at 01:25 EDT (981 days ago) in Capricornus

27.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°42'. Fri, 20 Aug 2021 at 18:15 EDT (981 days ago) in Capricornus

28.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Fri, 20 Aug 2021 at 19:31 EDT (981 days ago) in Capricornus

29.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Fri, 20 Aug 2021 at 19:39 EDT (981 days ago) in Capricornus

30.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°57'. Sun, 22 Aug 2021 at 00:56 EDT (979 days ago) in Capricornus

31.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Sun, 22 Aug 2021 at 03:11 EDT (979 days ago) in Capricornus

32.

Full Moon The Moon reaches full phase and is visible for much of the night. Sun, 22 Aug 2021 at 08:01 EDT (979 days ago) in Aquarius

33.

Asteroid 89 Julia at opposition Asteroid 89 Julia makes closest approach to the Earth. Tue, 24 Aug 2021 at 03:10 EDT (977 days ago) in Aquarius

34.

Comet 8P/Tuttle passes perihelion Comet 8P/Tuttle makes its closest approach to the Sun. Fri, 27 Aug 2021 (974 days ago) in Hydra

35.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Sun, 29 Aug 2021 at 22:22 EDT (972 days ago) in Taurus

36.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Mon, 30 Aug 2021 at 03:13 EDT (971 days ago) in Taurus

37.

Comet 8P/Tuttle reaches peak brightness Comet 8P/Tuttle is forecast to reach the brightest point in its 2021 apparition. Tue, 31 Aug 2021 (970 days ago) in Hydra

38.

Aurigid meteor shower 2021 The Aurigid meteor shower reaches its peak. Tue, 31 Aug 2021 (969 days ago) in Auriga

39.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Thu, 02 Sep 2021 (968 days ago) in Virgo

40.

Mercury at aphelion Mercury passes the furthest point along its orbit from the Sun. Sun, 05 Sep 2021 at 20:28 EDT (965 days ago) in Virgo